Stackable exercise stepper



FIG. 1 is a perspective view of a stackable exercise stepper;

FIG. 2 is another perspective view of the stackable exercise stepper shown in FIG. 1;

FIG. 3 is a left side view of the stackable exercise stepper shown in FIG. 1;

FIG. 4 is a right side view of the stackable exercise stepper shown in FIG. 1;

FIG. 5 is a front view of the stackable exercise stepper shown in FIG. 1;

FIG. 6 is a rear view of the stackable exercise stepper shown in FIG. 1;

FIG. 7 is a top plan view of the stackable exercise stepper shown in FIG. 1; and,

FIG. 8 is a bottom plan view of the stackable exercise stepper shown in FIG. 1.

The broken lines in the figures are for the purpose of illustrating portions of the stackable exercise stepper and form no part of the claimed design. 

CLAIM The ornamental design for a stackable exercise stepper, as shown and described. 